The RTHD-421S Touchless Automatic Hand Dryer is ideal an ideal hand drying solution for lower traffic areas and delivers a hands free reliable, quality performance every time. Dry Time - less than 20 seconds. Auto sensor provides touchless operation. Sleek modern design complements any washroom. Dual installation options - cord or hard wire connection. Durable ABS Plastic construction. Powerful Air Nozzle - Dries hands in 20-25 seconds. Selectable Heat ON/Off - For maximum comfort to user. Washable Dual Layer Filtering System - Provides protection from dust another air particles. Auto ON/Off Sensor. Noise Level, 78-82 dB.